Cotter-extractor



W. E. AYLOR.

COTTER EXTRACTOR.

APPLICATION FILED ocr 22. 1919.

1,336,9 Patented Apr. 13,1920.

WILLIAM E. AYLOR, 0F DAYTON, OHIO.

COTTER-EXTRACTOR.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed. October 22, 1919. Serial No. 332.502.

To all whom it may concern:

Be it known that I, WILLIAM E. AYLoR, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Cotter-Extractors, of which the following is a specification.

Hy invention relates to an improvement in cotter extractors or pullers.

In automobile construction work and in airplane work as well as many other mechanical lines cotter keys are used in great quantities and their extraction or removal becomes necessary, especially is this true in airplane construction. This removal is often tedious and diflicult owing to the inaccessible places where cotters are used. It is therefore the object of this invention to provide an implement for extracting or pulling cotters which is adapted to engage the eye of the cotter from either side so that in case the eye is not sufficiently exposed or accessible on one side of the nut it may be gotten at on the other side and thus removed with facility.

The implement is designed for extracting more particularly cotters of the form shown and described in the pending application filed by myself jointly with Milton Rauh, August 8th, 1919, Serial Number 316,105, in which the cotter has a specially formed eye which renders it impossible for the said eye to be wholly concealed when in position.

Referring to the accompanying drawings which illustrate my improved cotter extracting implement,

Figure 1 is a top plan view of the implement.

Fig. 2 is a side elevation thereof.

Fig. 3 is a plan view of the outer side of the holding jaw, the handle portion being broken off.

Fig. 4 is a front end view of the implement.

Fig. 5 is a side elevation of the two jaws showing the extracting jaw in the act of removing a cotter from a bolt and nut, and the holding jaw engaging the nut and acting as-a support for the implement.

In a particular description of the invention similar reference characters designate the same parts in the drawings.

The cooperating jaws -1- and -2 have handle extensions 3- and -4 by which the implement is manipulated. These two members are united by a pivot 5. The aw 1 is the one that moves on this pivot in the operation of the device and it may be called the extracting jaw. The other jaw, to wit, 2 is stationary in manipulating the device and it may be called the holding or prying member. The movable or extracting jaw -1- has a lateral extension or blade 6- on the extreme end thereof which is made of bardened steel and is attached by rivets. On this extension a transverse extracting pin 7- is rigidly mounted so that it extends on both sides of the part 6. The part 6- and the pin therewith are removable in case of breakage of either. As shown in Fig. 4, the ends of the pin -7 have slight upward curvature which is instrumental in preventing the said pin from slipping out of the eye of the cotter when the implement is being manipulated. The pin 7 on either side of the implement is adapted to engage the eye 8- of the cotter, depending upon which side the eye is accessible. This is a very convenient feature of the implement, as it frequently happens a cotter pin cannot be reached from both sides. As shown in Fig. 5, the cotter -9 is applied to a hexagon nut 10- and bolt 11-. In this form of nut the cotter is often restricted to very little accessibility. The implement is very useful in such cases on account of being able to engage the eye of the cotter from any angle of the exposure thereof. In Fig. 5 the extractor is in the act of pulling the cotter. The extracting jaw -1- is closed upon the holding aw -2- by spreading the handles -3 and t--. The holding jaw 2- has an opening 12 extending laterally in the form of a guide opening -13- of sufficient shape and area to permit the extension or blade 6- and the pin --7 to pass therethrough and beyond the jaw -2- as shown in broken lines in Fig. 2. The opening 13- acts as a guide for the blade 6- when pulling a cotter I and prevents any sidewise movement thereof when under strain. When the implement is in a position to extract the cotter the jaw 2- engages the nut and the implement is thus supported while the necessary force is applied to the extracting jaw to draw the cotter.

Having described my invention, I claim:

1. An implement of the character described, comprising cooperating jaws extended in the form of handle portions which are pivotally united, one of said jaws having a transversepin mounted therein below the plane of the jaw and either end of which is adapted to enter the eye of a cotter, and the other of said jaws having an in and extractin "aws extended in handle b r; 2O

portions and pivotally united, the extracting jaw having a lateral extension thereon and a transverse pin rigidly mounted in said extension, the supporting jaw having an opening therein through which said lateral extension and said pin are projected to a position in which the said pin may engage the eye of a cotter from either side thereof.

In testimony whereof I afiix my signature.

WILLIAM E. AYLOR 

